Slow-closing valve.



PATENTED JULY 9, 1907.

M. P. ooYLB. SLOW GLOSIN G VALVE. APPLICATION PILIED JULYZ. 1906.

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No. 859,371A

I'. w17, @Hoz "ms MARK F. COYLE, OF CORRY, PENNSYLVANIA.

SLOW-CLOSING VALVE Specification of Letters Patent.

latented July 9, 1907.

Application filed July 2, 1906. Serial No. 324,489.

To all whom 'it may concern:

Be it known that I, MARK F. COYLE, a citizen of the United States,residing at Corry, in the county of Erie and State of Pennsylvania, haveinventedcertain new and useful Improvements in Slow-Closing Valves, ofwhich the following is a specification.

My invention contemplates certain new and useful improvements in thatclass of valves for use on drinking fountains lavatories and the like,in which the valve may be readily and expeditiously opened to the fullextent, and when released will close automatically after a limitedperiod'.

The object of my invention is to provide a slow closing valve of thistype, which will be simple and durable in construction and operate witha minimum of friction and in an efficient manner, and in which theactuating parts will be at all times immersed in a body of oil, so thatthey will not corrode or otherwise deteriorate.

With this-and other objects in view as will more fully appear as thedescription proceeds the invention consists in certain constructions,arrangements, and

combinations of the parts hereinafter fully described and pointed out inthe appended claims.

For a full description of the invention and themerits thereof and alsoto acquire a knowledge of the details of construction of the means foreffecting the result' reference is to be had to the followingdescription and accompanying drawings, in which: l

Figure 1 is a vertical sectional view of my improved valve with parts inside elevation and other parts broken away. Fig. 2 is a horizontalsectional view on the line x-*x of Fig. 3. Fig. 3 is an enlarged detailside elevation of the cap piece, the piston, and the two sets of spiralarms carried thereby.

Corresponding and like parts are referred` to in the` followingdescription and indicated in all the views of the drawings by the samereference characters:

The body 1 of my improved valve is provided with a waterinlet 2 and awater outlet 3, separated from each other by a web 4 formed with araised annular valve seat 5. The valve 6 that is adapted to close on thevalve seat 5 may be of any desired material suitably packed and heldwithin a cup or likesecuring means attached to one end of the valve rod7. A capy piece 8 is provided with a depending flange formed on itsexterior with screw threads by which it is engaged and detachablysecured in the valve body 1 in the upper 'end thereof, and said cappiece is stationary. The cap piece 8 supports an upwardly extendingcylinder 9 which is preferably secured thereto by screw threads at itslower end as shown. A stuffing box 10 is secured in the cap .piece 8 andthe valve stem 7 extends through said stuffing box and upv through thecap piece and into the cylinder 9. To the valve'stem 7 above thestationary cap piece 8 there is rigidly secured a piston 11 which issuitably packed within the cylinder 9 so as to. slide longitudinallytherein with the valve stem. The stationary cap piece 8 is provided withupwardly extending spiral arms 12 and the piston 11 is provided withcomplemental depending arms 13. A sleeve 14 is loosely mounted on thevalvostem 7 between and within the circle of said two sets of spiralarms 12 and 13 and said sleeve carries at diametrically opposite pointsstuds 15 on which rollers 16 are mounted to freely turn. i These rollers16 are interposed between the arms 12 and the arms 13 and are adapted toride upon said arms so as to raise the piston 11 and the valve stem 7with the valve 6 whenever said valve stem and piston are turned abouttheir 1ongitudinal axes. The rollers 16 are preferably beveled fromtheir outer edges to their inner edges toovercome thedifference incircumference travel, and the said rollers are positively prevented fromgetting out of alinement by means of the studs which fasten them to theloose sleeve on the valve stem. The length of the sleeve starts themcorrectly and should they slip at any time in going up the lugs 18formed at the ends of the spirall arms will compensate for this'movement and prevent them from being displaced as well as act as a stopvto limit the movement of the rollers. p

A spring 19 may be interposed between the piston 11 and the cap 20 onthe cylinder 9 so as to assist in the y closing movement of the pistonand valve stem with its valve, and the valve stem projects through thecap 20 and is provided with an operating handle 21 on itsI projectingend. The piston 11 is provided with a portl extending therethrough andcontrolled by -a downwardly opening check valve 22 and the valve stem 7is provided with a passage 23 establishing communication between the twoportions of the cylinder 9 on opposite sides of the piston 11, saidpassage being susceptible of regulation by means of-a screw or needlevalve 24 extending longitudinally into the valve stem from the outer endthereof and intended for manual adjustment.

The cylinder 9 is intended to be filled with fluid, such as oil. In thepractical operation of the device, a quarter-turn of the operatinghandle 2l will turn tlie valve stem 7, and the rollers 16 will thus rideupwardly in the space between the spiral arms 12 and 13 'and cause thepiston 11 and valve stem lwith its valve to move upwardly or outwardly,thereby raising the valve from its seat and allowing the water to passfreely through the web 5 and out through the outlet 3 to the desiredpoint where it is needed. In this action or Inovement of the piston 11the check valve 22 will readily open to allow the oil in the cylinder 9above or beyond the said piston to pass freely through the portcontrolled by said check valve from the upper part of the cylinder tothe lower part. As soon as the operating handle f or lever 21 isreleased, the Water pressure (acting upon the upper surface oi the valveitselfi assisted to a greater or less extent by the sp'ring 19 if thelatter be used, tends to force the piston 11 downwardly or inwardlyagain against the body of oil which forms a perfect resistance andyields only as the oil is permitted to pass through the channel orpassage 23 from the lower side of the piston to the upper orouter sidethereof. The closing movement, therefore, will be a slow one as isevident, and the period consumed in closing *may be readily regulated bymeans of the screw or needle valve 24.

If my improved valve be used in any connection in which a refill or sealis desired after the main flow of water has been cut-off, the valve 6may be provided with a vont 25 establishing communication when the valveis closing, between the water inlet 2 and the water outlet 3 through agroove 26 in the web 4, said vent boing regulated by means oi a needlevalve or similar device 27 as shown.

.From the foregoing description in connection with the accompanyingdrawings, it will be seen that I have provided an improved constructionof slow closing valve which will be eiicient with a minimum amount offriction, owing to the construction and arrangement of the loose sleeve14 of the valve stem, in connection withthe anti-friction rollerscarried by said sleeve, and the spiral arms 12 and 13 between which saidanti-friction rollers operate, As the working parts of the device are atall times immersed in oil they will not corrode or otherwise deteriorateand at the same time the oil in the cylinder makes a positive resistancewhich is a yielding one and adjustable readily to vary the 'timeconsumed by the valve. in its closing movement.

It is to be also noted that a valve constructed in accordance with myinvention will not hammer under any pressure but will work independentlyof the water or pressure of the water and therefore does not requireadjusting for varying water pressures. The piston and stuffing box formperfect guides, thus providing a tight and accurately closing valve andpreserving the durability of the valve and bib washers. The duration ofthe flush can be instantly regulated by the needle valve or screw 24without disturbing the interior of the valve while at the same time allthe parts are easily accessible for replacement or repair.

Having thusdescribed the invention what is claimed as new is: f

`1. The combination with a valve body, its seat, the valve adapted toclose on said seat and the valve stein secured to said valve, ofstationary spiral arms encircling said stem, a plurality of complementaldepending arms movable with said stem, a sleeve mounted to turn and movelongitudinally on said stem within the circle of said arms and provided`with lrollers interposed between said arms and adapted to ride upon thelatter, whereby a rotary motion of the valve stem will be accompanied bya longitudinal movement, the said arms being provided at their ends withlugs designed to engage and limit the movement of the rollers; l

2. The herein -described valve, comprising a valve body provided with aseat a valve proper adapted to close on said seat, a stem to which saidvalve is secured, a cylinder mounted upon said body, the valve stemextending into said cylinder. a cap piece supporting said 'cylinder onthe valve body and provided with outwardly extending spiral arms, apiston secured to said vvalve stem and fitting said cylinder, spiralarms depending from said piston and coacting with the outwardlyextending spiral arms, means for turning said valve stem and piston, andanti-friction devices interposed between said two series of spiral armsand adapted to ride upon the same whereby the turning movement of thestem and piston will be accompanied by a longitudinal movement thereof.

3. A device of the character described, comprising a body provided witha valve seat, a valve adapted to closev on saidv seat, a stem secured tosaid valve, a cap piece mounted on said body andthrough which the valvestein extends, said cap piece being formed with a series of outwardlyextending spiral arms a cylinder supported on said cap piece, a pistonfitting said cylinder and movable with the valve stem, said piston beingprovided with a port, and a check valve controlling said port, thecylinder containing fluid and there being provided a passage independentof said port establishing communication between those portions of thecylinder at opposite sides of the piston` spiral arms depending fromsaid piston and co-acting-witb the outwardly extending spiral arms,anti-friction devices interposed between said two series of arms andadapted to ride upon the same whereby'a turning movement of the valve'stem and piston will be accompanied by a longitudinal movement thereof,and means for turning said valve stem.

4. A device of the character described, comprising a body provided witha valve seat, a valve adapted to close on said seat, a stem secured tosaid valve, a cap piece mounted on said body and through which the valvestem extends, said cap piece being formed with outwardly eX- tendingspiral arms, a cylinder supported on said cap piece, a piston fittingsaid cylinder and movable with lche valve stem, said piston beingprovided with a port, and a check valve controlling said port, thecylinder containing fluid and there being provided a passage independentof,

said port establishing communication between those portions ot thecylinder at opposite sides of the piston, spiral i In testimony whereofI affix my signature in presence4 of two witnesses.

MARK F. oovLn. [es] Witnesses G. T. KINCAID, LAWRENCE Cornia.

